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(2007/10/02)BOC-prolylphenylalanylprolylglycine benzyl ester
H-L-Pro-L-Ile-OBz
N-tert-butyloxycarbonyl-L-prolyl-L-phenylalanyl-L-prolylglycine
tert-butoxycarbonyl-L-proline N-hydroxysuccinimide ester
L-isoleucine benzyl ester tosylate